You don’t even need to drill it in the bottom. Our can has a hole at the top just below the rim which works the same. The air can find its way out but it can’t do the 180 degree turn around the rim especially if the bag makes a good seal around the rim.
You don’t even need to drill it in the bottom. Our can has a hole at the top just below the rim which works the same. The air can find its way out but it can’t do the 180 degree turn around the rim especially if the bag makes a good seal around the rim.